References
- Choi S., Jiang Z. A novel wearable sensor device with conductive fabric and PVDF film for monitoring cardiorespiratory signals. Sensors and Actuators A: Physical 2006; 128: 317–326
- Niizeki K., Nishidate I., Uchida K., Kuwahara M. Unconstrained cardiorespiratory and body movement monitoring system for home care. Medical and Biological Engineering and Computing 2005; 43: 716–724
- Siivola J. New noninvasive piezoelectric transducer for recording of respiration, heart rate and body movements. Medical and Biological Engineering and Computing 1989; 27: 423–424
- Akhbardeh A., Junnila S., Koivuluoma M., Koivistoinen T., Turjanmaa V., Kööbi T., Värri A. Towards a heart disease diagnosing system based on force sensitive chair's measurement, biorthogonal wavelets and neural networks. Engineering Applications of Artificial Intelligence 2007; 20: 493–502
- Postolache O., Silva Girao P., Postolache G., Pereira M. Vital signs monitoring system based on EMFi sensors and wavelet analysis. Paper presented at the IEEE Instrumentation and Measurement Technology Conference, WarsawPoland, May, 1–3, 2007
- Kim J.-M., Hong J.-H., Cho M.-C., Cha E.-J., Lee T.-S. Wireless biomedical signal monitoring device on wheelchair using noncontact Electro-mechanical Film sensor. Paper presented at the 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, LyonFrance, August, 23–262007
- Emfit Ltd, Homepage, Available online at: http://www.emfit.com (accessed 13 January 2009)
- Rushmer R. Cardiovascular Dynamics. W.B. Sounders, Philadelphia 1976
- Measurement Specialties Inc. Piezo film sensors. Technical Manual, Available online at: http://www.meas-spec.com (accessed 13 January 2009)
- Paajanen M., Lekkala J., Kirjavainen K. Electro Mechanical Film (EMFi) – a new multipurpose electret material. Sensors and Actuators A: Physical 2000; 84: 95–102
- Franco S. Design with operational amplifiers and analog integrated circuits. McGraw-Hill, New York 2002
- Welch P. D. The use of fast Fourier transform for the estimation of power spectra: a method based on time averaging over short, modified periodograms. IEEE Transactions on Audio and Electroacoustics 1967; 15: 70–73
- Jansen B., Larson B., Shankar K. Monitoring of the ballistocardiogram with the static charge sensitive bed. IEEE Transactions on Biomedical Engineering 1991; 38: 748–751